Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6208586 | Method and apparatus for communicating data in a wellbore and for detecting the influx of gas | Ashok Patel, James V. Leggett, III, Frank L. Gibbons, Steven C. Owens | 2001-03-27 |
| 5850369 | Method and apparatus for communicating data in a wellbore and for detecting the influx of gas | Ashok Patel, James V. Leggett, III, Frank L. Gibbons, Steven C. Owens | 1998-12-15 |
| 5592438 | Method and apparatus for communicating data in a wellbore and for detecting the influx of gas | Ashok Patel, James V. Leggett, III, Frank L. Gibbons, Steven C. Owens | 1997-01-07 |
| 5442294 | Conductivity method and apparatus for measuring strata resistivity adjacent a borehole | — | 1995-08-15 |
| 5283768 | Borehole liquid acoustic wave transducer | — | 1994-02-01 |
| 5260662 | Conductivity method and apparatus for measuring strata resistivity adjacent a borehole | — | 1993-11-09 |
| 5160925 | Short hop communication link for downhole MWD system | Patrick E. Dailey, Charles D. Barron | 1992-11-03 |
| 5089779 | Method and apparatus for measuring strata resistivity adjacent a borehole | — | 1992-02-18 |
| 5067114 | Correlation for combinational coded telemetry | — | 1991-11-19 |
| 5027129 | Gimballed antenna | Henry S. More, Neil H. Akkerman | 1991-06-25 |
| 4926188 | Gimballed antenna | Henry S. More, Neil H. Akkerman | 1990-05-15 |
| 4908804 | Combinatorial coded telemetry in MWD | — | 1990-03-13 |
| 4878053 | Actuation method | T. Charles Moore | 1989-10-31 |
| 4823125 | Method and apparatus for stabilizing a communication sensor in a borehole | Henry S. More | 1989-04-18 |
| 4787093 | Combinatorial coded telemetry | — | 1988-11-22 |
| 4736791 | Subsurface device actuator requiring minimum power | T. Charles Moore | 1988-04-12 |
| 4710708 | Method and apparatus employing received independent magnetic field components of a transmitted alternating magnetic field for determining location | Thomas C. Moore | 1987-12-01 |
| 4646831 | Precision connector for well instrumentation | John L. Marsh, Edward C. Fraser, William H. Bauer | 1987-03-03 |
| 4587741 | Ball inclinometer | Edward C. Fraser | 1986-05-13 |